I think that applies to about 99% of us. I'm not a self defense expert and don't claim to be. But I can look at a 'new' system like the 'bladed' stance thing and introduce it to my repertoire, and train with it. I do recognize that surprise and subsequent paralysis from fear is a tactic often used on the street. I'm not a steely eyed gunman. In fact I'm pretty much the opposite. I can recognize my weaknesses though, and try to overcome them while being realistic about what may happen in an attack.
I know, for instance, that while I'm sitting here unarmed, somebody could kick in the door and I've have little to no chance of reaching a gun that was ready for combat.
I think that the being iike steel thing is referred to here, though it's a fictional movie, I don't think that the truth can be argued much: